/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: happyiu
 * Date: 2021-11-07
 * Time: 21:18
 */


public class ListNode {
    int val;
    ListNode next;

    ListNode() {
    }

    ListNode(int val) {
        this.val = val;
    }

    ListNode(int val, ListNode next) {
        this.val = val;
        this.next = next;
    }
}


